You can customize the image shown in your Windows Phone 7 Tile. All you need to do is change the BackgroundImageURI value in the WMAppManifest.xml file.
<Tokens> <PrimaryToken TokenID="MyAppToken" TaskName="_default"> <TemplateType5> <BackgroundImageURI IsRelative="true"
IsResource="false">
/Images/Coins/tileImage.png</BackgroundImageURI>
You can also change this value in the Visual Studio 2010 Property page.
Figure 1: Change Background Image in Property page.
Visual Studio 2010 Bug
Unfortunately there is a bug in Visual Studio. If you choose the image using the property page the full path the the image to the image is not added to the WMAppManifest.xml.
<BackgroundImageURI IsRelative="true"
IsResource="false">
tileImage.png</BackgroundImageURI>
Without the complete path the image won’t show in the applications Tile.

acceptable, not like a bug.
OK, you can play semantics with me, but Visual Studio allows you to pick the image in the dropdown, but then doesn’t produce the correct XML to configure the app to use the background image. That’s a problem., Whatever we call it , it’s going to trip up some people, hence the post.
Unfortunatelly, I get this:
—— Deploy started: Project: Day7-Launchers, Configuration: Debug Any CPU ——
Deployment of application to device failed.
Error: Could not find a part of the path ‘C:\Users\jblankenburg\My Projects\31DaysOfWindowsPhone\Day7-Launchers\Day7-Launchers\Properties\WMAppManifest.xml’.
========== Deploy: 0 succeeded, 1 failed, 0 skipped ==========
Note that you need to uninstall the app to replace the tile.
+tom